if he was told he could high center his ramps, load his excavator, and not have them bend, they (the manufacturer), in my opinion are responsible to fix or replace that trailer BUT, common sense tells me......that i wouldn't load it that way. maybe his owners/operator's manual told him that he could. if that were the case, in that instance he has a legitimate beef with the manufacturer..
i agreed with you (copy of my earlier post above) that if you were instructed or told to load/use that trailer in that manner, yes, it's a manufacturer's problem. but.....like i also said, personally, i wouldn't have loaded my machine on that type of road condition.
yes, i feel we owe it to ourselves to get the best value for our dollar and insist that what we pay for is as it was sold to us. and i feel this is a wonderful forum to share these experiences. i know nothing about the circumstances of your excavator, i did see the pictures you posted on your trailer, and the slope of the roadway it was used on. i do feel that you bear some of the responsibility of this failure UNLESS!!!!!!!, they are telling or told you this is an acceptable practice on loading/unloading. apparently your manufacturer has told you that it should have been able to withstand that scenario, and are willing to repair it. personally, in that circumstance with the other probs with the trailer, i'd have insisted on a new one, or a refund.